CN206164354U - Power lightning protection circuit and power adapter - Google Patents
Power lightning protection circuit and power adapter Download PDFInfo
- Publication number
- CN206164354U CN206164354U CN201621140224.3U CN201621140224U CN206164354U CN 206164354 U CN206164354 U CN 206164354U CN 201621140224 U CN201621140224 U CN 201621140224U CN 206164354 U CN206164354 U CN 206164354U
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- lightning protection
- protection circuit
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Abstract
The utility model relates to a power source lightning protection circuit and adopt the power adapter of this power lightning protection circuit, wherein this power lightning protection circuit includes live wire end, zero line end, fuse F1, fuse F2, common mode inductance LF1, common mode inductance LF2, piezo -resistor MOV1, thermistor NTC1 and rectifier bridge BD1, and common mode inductance LF1 includes first coil and second coil, and common mode inductance LF2 includes tertiary winding and four coil, rectifier bridge BD1's first input end loops through tertiary winding, thermistor NTC1, fuse F2, first coil and fuse F1 and connects the live wire end, rectifier bridge BD1's second input loops through four coil and second coil connection zero line end, first coil and fuse F2's connected node is connected to piezo -resistor MOV1's one end, and second coil and four coil's connected node is connected to piezo -resistor MOV1's the other end. Above -mentioned power lightning protection circuit and power adapter can not only improve the anti thunderbolt ability of power and prevent the surge effect, can also strengthen electrical safety nature.
Description
Technical field
This utility model is related to electronic technology field, more particularly to a kind of power lightning protection circuit and power supply adaptor.
Background technology
As the electronic equipments such as the development of electronic technology, communication apparatus, household electrical appliance are more and more accurate, it is to working environment
Requirement also more and more higher, and the transient overvoltage of thunder and lightning and surge can cause big energy impact to electronic equipment by circuit,
It is light then cause components and parts or device damage, it is heavy then be likely to occur chain accident, for example puncture apparatus insulated protection, cause personal wound
Evil accident etc..
In order to improve the electrical security of electronic equipment, at present many electronic equipments have all carried out anti-lightning strike design.It is existing
In technology, generally in live wire and an indirect varistor of zero line, the high-energy that thunder and lightning brings is absorbed by varistor.It is this
Although mode circuit is simple, it is easy to accomplish, its energy absorbing efficiency is limited, when thunderbolt and surge impact arrive,
Comparison high " residual voltage " can be left, it is still very big for the threat of rear class equipment.
Utility model content
Based on this, it is necessary to provide a kind of power lightning protection circuit and power supply adaptor, the anti-lightning energy of power supply can be improved
Power and Anti-surging effect, moreover it is possible to strengthen electrical security.
The utility model discloses a kind of power lightning protection circuit, it includes zero line, zero line side, electric fuse F1, electric fuse
F2, common mode inductance LF1, common mode inductance LF2, varistor MOV1, critesistor NTC1 and rectifier bridge BD1, wherein：
The common mode inductance LF1 includes first coil and the second coil, and the common mode inductance LF2 includes tertiary coil and the
Four coils；
The first input end of the rectifier bridge BD1 passes sequentially through the tertiary coil, the critesistor NTC1, the guarantor
Dangerous silk F2, the first coil and the electric fuse F1 connect the zero line；
Second input of the rectifier bridge BD1 passes sequentially through the 4th coil and second coil connection described zero
Line end；
One end of the varistor MOV1 connects the connecting node of the first coil and the electric fuse F2, the pressure
The other end of quick resistance MOV1 connects the connecting node of second coil and the 4th coil.
Used as a kind of embodiment, the power lightning protection circuit also includes electrochemical capacitor EC1, the electrochemical capacitor EC1's
Two ends connect respectively first outfan and the second outfan of the rectifier bridge BD1, the second output termination of the rectifier bridge BD1
Ground.
Used as a kind of embodiment, the power lightning protection circuit also includes differential mode capacitor CX1, the differential mode capacitor CX1's
One end connects the connecting node of the critesistor NTC1 and the tertiary coil, the other end connection of the differential mode capacitor CX1
The connecting node of second coil and the 4th coil.
Used as a kind of embodiment, the power lightning protection circuit also includes varistor string, the varistor string and institute
State varistor MOV1 in parallel, the varistor string includes varistor MOV2 and varistor MOV3.
Used as a kind of embodiment, the power lightning protection circuit also includes gas-discharge tube GDT1, the varistor
The connecting node of MOV2 and the varistor MOV3 is grounded by the gas-discharge tube GDT1.
Used as a kind of embodiment, the power lightning protection circuit also includes transient voltage suppressor diode TVS1, the wink
One end of state voltage suppression diode TVS1 connects first outfan of the rectifier bridge BD1, and the transient voltage suppresses two poles
The other end ground connection of pipe TVS1.
Used as a kind of embodiment, the power lightning protection circuit also includes transient voltage suppressor diode TVS2 and transient state electricity
Constrain diode TVS3 processed, first outfan of the rectifier bridge BD1 passes sequentially through the transient voltage suppressor diode TVS2
And the transient voltage suppressor diode TVS3 ground connection.
The invention also discloses a kind of power supply adaptor, it is included such as the power supply described in above-mentioned any embodiment
Lightning protection circuit.
Used as a kind of embodiment, the power supply adaptor also includes voltage conversion circuit, the voltage conversion circuit
First input end and the second input connect respectively first outfan and the second outfan of the rectifier bridge BD1.
Used as a kind of embodiment, the power supply adaptor also includes filter circuit, and the input of the filter circuit connects
The outfan of the rectifier bridge BD1 is connect, the outfan of the filter circuit connects the input of the voltage conversion circuit.
Above-mentioned power lightning protection circuit and power supply adaptor, using dual fail-safe, double common modes, high-energy pressure cell and surge
Straining element, to thunderbolt energy and surge energy double-absorption is carried out, and to late-class circuit duplicate protection is carried out, and not only improves anti-thunder
Ability and Anti-surging effect are hit, electrical security is also enhanced.
Description of the drawings
Fig. 1 is the circuit diagram of the power lightning protection circuit of the embodiment of this utility model one；
Fig. 2 is the circuit diagram of the power lightning protection circuit of another embodiment of this utility model；
Fig. 3 is the circuit diagram of the power lightning protection circuit of the another embodiment of this utility model；
Fig. 4 is the structural representation of the power supply adaptor of the embodiment of this utility model one；
Fig. 5 is the structural representation of the power supply adaptor of another embodiment of this utility model.
Specific embodiment
It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with the accompanying drawings to this
The specific embodiment of utility model is described in detail.Elaborate many details in order to abundant in the following description
Understand this utility model.But this utility model can be implemented with being much different from alternate manner described here, this area
Technical staff can do similar improvement in the case of without prejudice to this utility model intension, therefore this utility model does not receive following public affairs
The restriction of the specific embodiment opened.
Fig. 1 is referred to, as shown in figure 1, the high-voltage switch gear characteristic instrument 100 of an embodiment, including electric fuse F1, electric fuse
F2, common mode inductance LF1, common mode inductance LF2, varistor MOV1, critesistor NTC1 and rectifier bridge BD1, wherein, common mode inductance
LF1 includes first coil and the second coil, and common mode inductance LF2 includes tertiary coil and the 4th coil；The first of rectifier bridge BD1 is defeated
Enter end and pass sequentially through tertiary coil, critesistor NTC1, electric fuse F2, first coil and electric fuse F1 connection zero line；Rectification
Second input of bridge BD1 passes sequentially through the 4th coil and the second coil connection zero line side；One end connection of varistor MOV1
The connecting node of first coil and electric fuse F2, the other end of varistor MOV1 connects the connection of the second coil and the 4th coil
Node.
In the present embodiment, common mode inductance LF1 and varistor MOV1 constitutes primary surge absorbing circuit, when thunderbolt voltage
Or big surge voltage is when being added to live wire and zero line two ends, first by electric fuse F1, common mode inductance LF1 and varistor MOV1
The high-energy that thunderbolt or surge bring is absorbed.Critesistor NTC1 and common mode inductance LF2 constitutes smooth sea and gushes absorption electricity
Road, the residual amount of energy not absorbed by primary surge absorbing circuit by damping action consumption further weakens thunderbolt or surge band
The energy impact for coming.By Multistage surge absorbing circuit, thunderbolt residual voltage and surge residual voltage can be effectively reduced, anti-lightning effect is more
It is good.
In order to strengthen surge absoption effect, such as varistor MOV1 adopts metal-oxide varistor, such as Zinc Oxide
Varistor.Such as critesistor NTC1 adopts negative tempperature coefficient thermistor.Such as inductance value of common mode inductance LF1 is less than altogether
The inductance value of mould inductance LF2.And for example, common mode inductance LF1 adopts little common mode inductance, common mode inductance LF2 to adopt big common mode inductance.Again
Such as, the inductance value of common mode inductance LF1 is less than 30mH, and the inductance value of common mode inductance LF2 is more than 50mH.
In the present embodiment, electric fuse F1 plays primary protective effect, when the thunderbolt voltage for being applied to live wire and zero line two ends
Or surge voltage greatly is excessive, such as thunderbolt energy or surge energy are more than the absorbent ceiling capacity of above-mentioned power lightning protection circuit institute
When, by blowout current of the electric current caused on live wire more than electric fuse F1 so that electric fuse F1 fuses, cut off late-class circuit or set
The standby connection between power supply, with the thing on fire for avoiding late-class circuit or equipment from working on and produce under big energy impact
Therefore.Electric fuse F2 plays rear class protective effect, if the residual amount of energy after common mode inductance LF1 and varistor MOV1 is excessive,
When causing the electric current for flowing through electric fuse F2 to be more than its blowout current, late-class circuit or equipment and power supply are cut off in electric fuse F2 fusing
Between connection, with the fire accident for avoiding late-class circuit or equipment from working on and produce under big energy impact.So, protect
Dangerous silk F1 and electric fuse F2 constitute duplicate protection, even if thunderbolt energy or big surge energy is excessive leads to not completely, also to protect
The safety of shield late-class circuit or equipment.
Wherein, blowout current of the blowout current of electric fuse F1 more than the electric fuse F2, such as electric fuse F1 is from rule
Lattice are the electric fuse of 6.3A, and electric fuse F2 is from the electric fuse that specification is 3A.
In the present embodiment, zero line is used to connect the live wire in electric lines of force, and zero line side is used to connect zero in electric lines of force
Electric current is carried out rectification output by line, rectifier bridge BD1, makes the two-way exchange electricity being input into from live wire, zero line be converted to unidirectional direct current
Electricity.
It should be appreciated that between common mode inductance LF2 and rectifier bridge BD1, according to actual needs, corresponding work(can also be arranged
Energy circuit, such as electromagnetic interference suppression circuit, filter circuit, voltage conversion circuit etc..
Above-mentioned power lightning protection circuit, it is right using dual fail-safe, double common modes, high-energy pressure cell and Surge suppression element
Thunderbolt energy and surge energy carry out double-absorption, and to late-class circuit duplicate protection is carried out, and not only improve anti-lightning ability and prevent
Surge effect, and strengthen electrical security.
In one embodiment, power lightning protection circuit also includes at least one of electrochemical capacitor EC1 and differential mode capacitor CX1.
As shown in Fig. 2 the two ends of electrochemical capacitor EC1 connect respectively first outfan and the second outfan of rectifier bridge BD1, rectifier bridge
Second output head grounding of BD1.One end connection electric fuse F2 and the connecting node of tertiary coil of differential mode capacitor CX1, differential mode electricity
The other end for holding CX1 connects the connecting node of the second coil and the 4th coil.
Wherein, electrochemical capacitor EC1 strobes, for some interference signals in filtering circuit；Differential mode capacitor CX1 is used
Differential mode interference signal in filtering circuit.By electrochemical capacitor EC1 and/or differential mode capacitor CX1, above-mentioned power lightning protection can be lifted
The Electro Magnetic Compatibility of circuit.
In one embodiment, power lightning protection circuit also includes varistor string, the varistor string and varistor
MOV1 is in parallel.For example, as shown in figure 3, varistor string includes the varistor MOV2 and varistor MOV3 of series connection.And for example,
One end connection first coil and the connecting node of the electric fuse F2 of varistor MOV2, the other end of varistor MOV2 connects
Connect one end of varistor MOV3, the coil of the other end second of varistor MOV3 and the connecting node of the 4th coil.
In one embodiment, power lightning protection circuit also includes gas-discharge tube GDT1, for example, gas-discharge tube GDT1 choosings
Use ceramic gas discharge tube.The connecting node of varistor MOV2 and varistor MOV3 is grounded by gas-discharge tube GDT1.
When the voltage difference at gas-discharge tube GDT1 two ends is applied to more than the dielectric strength of gas in gas-discharge tube, the gas of two interpolars
Discharge breakdown, gas-discharge tube GDT1 are converted into conduction state by body space by original state of insulation, so, the thunder in circuit
Hit surge current and the earth is imported by gas-discharge tube GDT1, form bleed-off circuit.After conducting gas-discharge tube GDT1 the two poles of the earth it
Between voltage maintain the residual voltage level that electric arc channel is determined of putting.
In one embodiment, power lightning protection circuit also includes transient voltage suppressor diode TVS1, and transient voltage suppresses
One end of diode TVS1 connects first outfan of rectifier bridge BD1, the other end ground connection of transient voltage suppressor diode TVS1.
For example, if TVS1 adopts unidirectional transient voltage suppressor diode, the negative pole connection rectification of transient voltage suppressor diode TVS1
First outfan of bridge BD1, the plus earth of transient voltage suppressor diode TVS1.When transient voltage suppressor diode TVS1's
When being subject to reverse transient state high energy impact events between both positive and negative polarity, its is breakdown, and the high impedance between both positive and negative polarity rapidly goes to Low ESR,
Absorb up to thousands of watts of surge power so as to which the voltage clamp of positive and negative interpolar is in a predetermined value.If TVS1 adopts two-way wink
State voltage suppression diode, then dividing without both positive and negative polarity, its any one end connects first outfan of rectifier bridge BD1, another termination
Ground.
In one embodiment, in order to further strengthen voltage stabilizing ability, power lightning protection circuit also suppresses including transient voltage
First outfan of diode TVS2 and transient voltage suppressor diode TVS3, wherein rectifier bridge BD1 passes sequentially through transient voltage
Suppress diode TVS2 and transient voltage suppressor diode TVS3 ground connection.
The invention also discloses a kind of power supply adaptor, as shown in figure 4, the power supply adaptor 400 is anti-including power supply
The power lightning protection circuit of thunder and lightning road 410, the wherein specific embodiment of power lightning protection circuit 410 as described in above-mentioned any embodiment
It is shown, for example with the power lightning protection circuit realiration of any of the above-described embodiment.
As a kind of embodiment, as shown in figure 5, the power supply adaptor 400 also includes voltage conversion circuit 430 and filtering
The outfan of the connection power lightning protection of input 430 circuit 410 of at least one of circuit 450, wherein voltage conversion circuit, for example
The first input end of voltage conversion circuit 430 and the second input connect respectively first outfan of rectifier bridge BD1 and second defeated
Go out end.Filter circuit 450 connects respectively power lightning protection circuit and voltage conversion circuit, for example, the input connection of filter circuit
The outfan of power lightning protection circuit 410, the outfan of filter circuit connects the input of voltage conversion circuit.For example, filtered electrical
Road includes two inputs, and first outfan and the second outfan of rectifier bridge BD1 are connected respectively.
In the present embodiment, voltage conversion circuit is used to that civil power to be converted to the running voltage needed for electronic equipment.For example
According to the electricity consumption needs of distinct electronic apparatuses, using corresponding voltage conversion circuit by 220V alternating currents be converted to 5V, 10V and/
Or the multiple voltage such as 12V.The interference signal that filter circuit is used in filtering circuit, from the signal of telecommunication of rectifier bridge BD1 outputs, Jing filters
After wave circuit filtering, then it is input into voltage conversion circuit and carries out voltage conversion.
Above-mentioned power supply adaptor, it is pressure-sensitive by dual fail-safe, double common modes, high-energy due to using above-mentioned power lightning protection circuit
Element and Surge suppression element, to thunderbolt energy and surge energy double-absorption is carried out, and to late-class circuit duplicate protection is carried out,
Therefore anti-lightning ability and Anti-surging effect are not only improved, moreover it is possible to strengthen electrical security.
It should be noted that in embodiment described above, when an element is considered as " connection " another element, can be with
It is directly to another element or may be simultaneously present intermediary element.Conversely, when element for be referred to as " direct " with it is another
When element connects, there is no intermediary element.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (10)
1. a kind of power lightning protection circuit, it is characterised in that including zero line, zero line side, electric fuse F1, electric fuse F2, common mode electricity
Sense LF1, common mode inductance LF2, varistor MOV1, critesistor NTC1 and rectifier bridge BD1, wherein：
The common mode inductance LF1 includes first coil and the second coil, and the common mode inductance LF2 includes tertiary coil and the 4th line
Circle；
The first input end of the rectifier bridge BD1 passes sequentially through the tertiary coil, the critesistor NTC1, the electric fuse
F2, the first coil and the electric fuse F1 connect the zero line；
Second input of the rectifier bridge BD1 passes sequentially through the 4th coil and second coil connects the zero line
End；
One end of the varistor MOV1 connects the connecting node of the first coil and the electric fuse F2, the pressure-sensitive electricity
The other end of resistance MOV1 connects the connecting node of second coil and the 4th coil.
2. power lightning protection circuit as claimed in claim 1, it is characterised in that the power lightning protection circuit also includes electrochemical capacitor
The two ends of EC1, the electrochemical capacitor EC1 connect respectively first outfan and the second outfan of the rectifier bridge BD1, described whole
Second output head grounding of stream bridge BD1.
3. power lightning protection circuit as claimed in claim 1, it is characterised in that the power lightning protection circuit also includes differential mode capacitor
One end of CX1, the differential mode capacitor CX1 connects the connecting node of the critesistor NTC1 and the tertiary coil, the difference
The other end of mould electric capacity CX1 connects the connecting node of second coil and the 4th coil.
4. power lightning protection circuit as claimed in claim 1, it is characterised in that the power lightning protection circuit also includes varistor
String, the varistor string is in parallel with the varistor MOV1, and the varistor string includes the varistor MOV2 of series connection
With varistor MOV3.
5. power lightning protection circuit as claimed in claim 4, it is characterised in that the power lightning protection circuit also includes gas-discharge tube
The connecting node of GDT1, the varistor MOV2 and the varistor MOV3 is grounded by the gas-discharge tube GDT1.
6. power lightning protection circuit as claimed in claim 1, it is characterised in that the power lightning protection circuit also presses down including transient voltage
One end of diode TVS1 processed, the transient voltage suppressor diode TVS1 connects first outfan of the rectifier bridge BD1, institute
State the other end ground connection of transient voltage suppressor diode TVS1.
7. power lightning protection circuit as claimed in claim 6, it is characterised in that the power lightning protection circuit also presses down including transient voltage
Diode TVS2 processed and transient voltage suppressor diode TVS3, first outfan of the rectifier bridge BD1 passes sequentially through the wink
The state voltage suppression diode TVS2 and transient voltage suppressor diode TVS3 is grounded.
8. a kind of power supply adaptor, it is characterised in that include the power lightning protection circuit as any one of claim 1 to 7.
9. power supply adaptor as claimed in claim 8, it is characterised in that the power supply adaptor also includes voltage conversion circuit,
The first input end of the voltage conversion circuit and the second input connect respectively first outfan of the rectifier bridge BD1 and
Two outfans.
10. power supply adaptor as claimed in claim 9, it is characterised in that the power supply adaptor also includes filter circuit, described
The input of filter circuit connects the outfan of the rectifier bridge BD1, and the outfan of the filter circuit connects the voltage and turns
Change the input of circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621140224.3U CN206164354U (en) | 2016-10-19 | 2016-10-19 | Power lightning protection circuit and power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621140224.3U CN206164354U (en) | 2016-10-19 | 2016-10-19 | Power lightning protection circuit and power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164354U true CN206164354U (en) | 2017-05-10 |
Family
ID=58655054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621140224.3U Expired - Fee Related CN206164354U (en) | 2016-10-19 | 2016-10-19 | Power lightning protection circuit and power adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164354U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066636A (en) * | 2018-08-14 | 2018-12-21 | 四川虹美智能科技有限公司 | A kind of circuit of Anti-surging |
| CN109378715A (en) * | 2018-11-26 | 2019-02-22 | 深圳时空科技集团有限公司 | A kind of intelligent distribution box and its mode of connection |
| CN111550912A (en) * | 2020-04-09 | 2020-08-18 | 海信（山东）空调有限公司 | Air conditioner filter circuit, air conditioner controller and air conditioner |
| CN112290507A (en) * | 2020-11-30 | 2021-01-29 | 桂林仁立达科技有限责任公司 | Lightning protection module convenient to use integrated with circuit breaker |
| CN114172117A (en) * | 2021-12-09 | 2022-03-11 | 华荣科技股份有限公司 | Anti-electric shock double-protection constant current source rectifying circuit |
| CN114243662A (en) * | 2021-11-01 | 2022-03-25 | 南方电网数字电网研究院有限公司 | VFTO anti-interference circuit and switching device |
-
2016
- 2016-10-19 CN CN201621140224.3U patent/CN206164354U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066636A (en) * | 2018-08-14 | 2018-12-21 | 四川虹美智能科技有限公司 | A kind of circuit of Anti-surging |
| CN109066636B (en) * | 2018-08-14 | 2020-06-09 | 四川虹美智能科技有限公司 | Anti-surge circuit |
| CN109378715A (en) * | 2018-11-26 | 2019-02-22 | 深圳时空科技集团有限公司 | A kind of intelligent distribution box and its mode of connection |
| CN109378715B (en) * | 2018-11-26 | 2023-12-01 | 深圳时空科技集团有限公司 | Intelligent distribution box and wiring method thereof |
| CN111550912A (en) * | 2020-04-09 | 2020-08-18 | 海信（山东）空调有限公司 | Air conditioner filter circuit, air conditioner controller and air conditioner |
| CN112290507A (en) * | 2020-11-30 | 2021-01-29 | 桂林仁立达科技有限责任公司 | Lightning protection module convenient to use integrated with circuit breaker |
| CN114243662A (en) * | 2021-11-01 | 2022-03-25 | 南方电网数字电网研究院有限公司 | VFTO anti-interference circuit and switching device |
| CN114172117A (en) * | 2021-12-09 | 2022-03-11 | 华荣科技股份有限公司 | Anti-electric shock double-protection constant current source rectifying circuit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20181019 |